Juniper Networks Inc. Juniper Networks Inc. Juniper Networks Inc. Orange Comcast Comcast Huawei Verizon Cisco RFC7311 describes mechanism for carrying accumulated IGP cost across BGP domains however it limits to IGP-metric only. There is a need to accumulate and propagate different types of metrics as it will aid in intent-based end-to-end path across BGP domains. This document defines BGP extensions for generic metric sub-types that enable different types of metrics to be accumulated and carried in BGP. This is applicable when multiple domains exchange BGP routing information.